2021 Audi A5 2.0 TDI S Line

Overview

• Make: Audi
• Model: A5
• Trim: S Line
• Version: 2.0 TDI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (161 bhp)
• Year: 2021
• Mileage: 53,000 miles
• Fuel: Diesel, mild hybrid
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 161 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 137 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A5 S Line is advertised with 53,000 miles, approximately 2,000 above the typical mileage for its age. Its asking price of £20,000 is £73 above the AskCar estimate of £19,927. To work out the AskCar estimate, we analyse UK dealer adverts for 1,830 Audi A5 cars across different ages and specifications. The asking price is now £499 lower than when we first recorded the advert 98 days ago. Our latest MOT record expired on 27 October 2026. Check the current position with the dealer. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Plympton Car Centre (Plymouth), based in Plymouth. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £73 (under 1%) over the AskCar estimate of £19,927.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 1,830 priced Audi A5 adverts across different ages and specifications, as of 2 November 2026.

A 2021 Audi A5 with the 2.0 diesel engine is typically advertised at £19,700: the median of the 119 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 Audi A5 has been on sale for at least 98 days.

Price history

AskCar first saw this advert on 27 July 2026 at £20,499. Its asking price is now £20,000, £499 less. The latest price cut was seen on 13 October 2026.

Price changes recorded:

• 28 July 2026: £20,499
• 13 October 2026: £20,000

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: the latest record we hold ran out on 27 October 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 21 October 2025, passed.

Advisories at the latest test: offside rear tyre worn close to legal limit/worn on edge 2.0mm.

Mileage at that test: 48,036 miles, which matches the advertised 53,000 miles.

Advertised mileage is about 2,000 miles higher than the median mileage of a 2021 Audi A5 on AskCar.

Similar cars

30 other 2021 Audi A5 S Line 2.0 diesel automatic hatchbacks are for sale at UK dealers, from £13,995 to £22,990, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A5 S Line, 2.0 diesel hatchback, white. Mileage: 54,000 miles. Price: £18,999, £1,001 less than this car. Dealer: A & S Cars in Bishop's Stortford. AskCar page: https://askcar.co.uk/car/audi-a5-2021-38ce2226d3bb
• 2021 Audi A5 S Line, 2.0 diesel hatchback, blue. Mileage: 51,429 miles. Price: £21,798, £1,798 more than this car. Dealer: Arnold Clark Liverpool Motorstore / MG / Chery in Liverpool. AskCar page: https://askcar.co.uk/car/audi-a5-2021-630786cbeb5d
• 2021 Audi A5 S Line, 2.0 diesel hatchback, blue. Mileage: 51,000 miles. Price: £21,500, £1,500 more than this car. Dealer: PMA Cars NI in Newry. AskCar page: https://askcar.co.uk/car/audi-a5-2021-00c6bfd32934

• The nearest: 2021 Audi A5 S Line, 2.0 diesel hatchback, white, 83 miles from this car. Mileage: 95,052 miles. Price: £15,791, £4,209 less than this car. Dealer: Cardiff Trade Sales in Cardiff. AskCar page: https://askcar.co.uk/car/audi-a5-2021-63c94aa37289